body mass index

body mass index

A measurement of the relative percentages of fat and muscle mass in the human body, in which weight in kilograms is divided by height in meters squared and the result used as an index of obesity.

body mass index

n

(Medicine) an index used to indicate whether a person is over- or underweight. It is obtained by dividing a person's weight in kilograms by the square of their height in metres. An index of 20–25 is normal. Abbreviation: BMI

body mass index - a measure of someone's weight in relation to height; to calculate one's BMI, multiply one's weight in pounds and divide that by the square of one's height in inches; overweight is a BMI greater than 25; obese is a BMI greater than 30

population-based survey, the researchers classified subjects according to their breakfast preferences and compared these to their body mass indices (BMIs), Eating cereal or quick bread (nonyeast bread, such as muffins) for breakfast was associated with the lowest body mass index (the closest to ideal weight).

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